Furnace for smelting ores.



W. KEMP. PURNAGB PQR .SMBLTING oRBs. APJLIOATION FILED 0012.3, 1903.

Patented Oct. 12,1909.

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APPLICATION FILED 00T. 3, 1903.

Patented 0t.12,1909.

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UNiTED STATES. PATENT OFFICE.

WILLIAM KEMP, or Tucson, arzene-TERRITORY, ,ess1eNoa, ;aY manor AND Mnsnn ASSIGNMENTS, 'ro THE KEMP HYDRO-.cannon FUnNaoEooMPANr, .e CORPORATION 0F NEW YORK. i

l runnnen'ron siuELi'rxNe onus;

To all whom it may concern:

Be it known that I, WILLIAM KEMP, acitizen of the United States, and a resident of Tucson, inthe county of Pirna and Ter` ritory of-Arizona, have invented. new andl useful ImprovementsY in Furnaces for Smelting Orcs, of which the following is a clear, and exactdescription; c

My invention relates to furnaces, and ad- V mits of general use, but is oit-peculiar value'. in furnacesprovided with water jackets and adapted t'obe us'din connection withburners for smelting'oros. Reference is to be had to the accompanying drawings'forlning a part of this speci-f. cation, in which similar characters of reference 'indicate corresponding parts in both Figure 1 1s a front elef'ation, partly in section, of a furnace embodying-my invention; and Fig. 2 is af fragmentary vertical section through one of theburner's and a portion of the water jacket audits immediate connections. i

The air pi e is shown at '1, and is pro-l videdwith t e usual connections 2, 3, for supplying branch pipes 4, provided with distributin heads 5, 6, and each of these heads l is provided with downwardly extending pipes 7 8, for supplying the air to the furnace. The furnace consists ofa shaft having a double walled water jacket 9 containing water 10, 4and this water jacket rests upon another water jacket 1L) containing water 12.

The said water jacket '11 vforms the walls of the smeltingfchamber, and is set outwardly from the watery jacket 95 as shown, thus to enlarge the lower part of the furnace, relatively to theshaft, and thereby furnish an increased internal capacit to said smelting chamber, as will hereina r be more fully explained. This waterv jacket is provided with twyer ,apertures 1-3 each havingthe sides thereof extending obliquel' upward as indicated more particularly in wit the pipes 7, 8. 'Gates 18, 19, are' ro vided for the purpose of governing the. ow

-of airthrough the pipes 7 8. Theaperture v20 in the burner 14 is a vpeep-hole, and is closed by a .dropv door 21, which may ig. 1. The casings of the burners are shown at 14 and are l head 'or 4part 22 `vin the burner is provided with a sinuous channel '23,r formed in part by an inner cylinder and' anouter cylinder 24, both concentric and integral therewith, The lmiXi'IgQpi e is shown at 251 vand is prov vided'with a c amp 26;.extendingupward1y sp1ennesima'entretienraten. Patented Oct; 122,1'19091.- Application inea oecober'afieos; faerie; ne. 175,583. e

I" turned tothe right or left in orderto yenable v.the operator ,to look into the burner. The

therefrom.; Molinted 'centrali j within the burner' '-l'isa'cylinder 2 7 v"to w ichv'the mixjing pipe 1,25' is rlconnected-.g Ajhad-Wheel-28 is provided-forthc" purpose 'ofA controlling' fthe burner. Y Jip'e 2arniounted coneentrically awi-th Icylin 'er 27. is-provided-at its-inner end'with a. flaringportion 29 'serving as a' valve seat,

conical valve 30,' vInountedfupon a'revoluble stem BOaand controllable by the hand-wheel connected with. the 'oil pipe .32. The steam with a steam pipe 35. The oil nected with another'pipe' w ich feeds the same, and somewhatsimilarly the'steam pipe 35 is connected with a pipe 37 whereby itis fed with steam'.

The bed ofthe furnace is shown at 38 and upon it rests the brickwork 39. A .wall-"or" lining 40 of reproof material is built-'upon the brickwork 39VV and extends upwardly therefrom. It will be noticed inFig. f1 that `this wall is ofradually decreasing thickness upwardly, e upperfedgethereof twine;y

downwardly and inwardly corresponding to and' flush with the lower portions of the. sides of the saidA openings 13 softhatlthe wall presents an inclined inner surface. The purpose of this inclination is to produce a space b between 'the upper portion of thew'all and the matte' a within thefurnac'e, said space being gradually widened lupwardly, due. to the fact that as the ore falls to the bottom of the smelting chamber from the' shaft of the furnace,4 the same spreads outwardly on jt-he bottom and assumes a conical form up- The ,bedr38 rests upon wardly, as shown.A sup ortslll.` I-

Flech'burnerca in' 14 is provided with 'a dan' e 1 2 so dispose as to orman oblique sur ace,- and bolts 43 secure the flange 42 to the water jacket 11, as indicated in Fig. 1. be the arrangement being such that the axes of' 110 and also-as a distributin nozzle. Mounted centrally within thisv flaring-portion 29 is a 28;`` The oil inlet tube is shown at 31 and isk inlet tubev 33-is connected y anothertube 34` plipe 32 Ais con- 90 comparatively.' thin 4and beveled or'inclined'l* ed at 45 where it passes through the clamp work from eXcessive heat, the outer end of y passes freely through a hole 27b in the pipe v thereby forming a belting of the mixture sinuous channel 23 hereinbefore referred to,

-box 47. `An air jac the several burners are in alinement with the centers of the several apertures13. By this arrangement the inclination of the burner, the oblique conformity of the apertures 13 and the inclination lof the wall 40, produce a coacting relation, the blaze from each burner being driven downward and into or through the ore at the lower part thereof', while the said space Zi also becomes filled with the burning ,mixture from the burners,

around or about the ore, which greatly facilitates the reducing or smelting operation.

The head or part22 of the burner is provided twith an inwardly extending annular bead 44, as shown more particularly in Fig. 2, and also with an inwardly eXtendin cylinder 22 llocated between the inner an outer cylinders 24 and 24'a and coperating with the cylinders in the formation of the said head fitting in the interior of the burner casing'14, as shown. The pipe 27 a is thread- 26', and the pipe 25 is connected with the pipe 27 f the latter passing through the cylinder 27, and packed b means of a stuffing 'et 48, having holes 48a is providedforthe purpose of increasing the heat` of. air supplied tothe furnace and also for the purpose of protecting the metal the jacket having an air deiiector 48". Air

27", to mingle with the vapor mixture 1ssuing from the burners through the apertures 13 thereby tending-to prevent excessive heating in the burner, the same step serving to raise the air to a higher temperature.

. The general operation of the burners is described in my other application filed concurrently herewith Serial No. 175,582, and need not be dwelt upon in detail in the present application, whlch relates more particularly to the furnace proper as above described. It may be stated, however, that by means of the pipes 36, 32, 31, liquid hydrocarbon is supphed, and that steam is supplied through the pipes 35, 37 and tubes 34, 33 to the mixing pipe 25, in which the outward ow thereof. It will thus be seen vaporizing of the oil or hydrocarbon starts to take place. The admixture is thence conducted to the cylinder 27, thence through vapor pipe 27 d to the interior of the cylinder 24 andthe air is supplied through the pipes 7 a and 8 which are controlled by the gates 18, 19. Air from the pipe 7 passes through the sinuous channel 23, becoming thereby heated 3 to a great extentand is discharged at a point l immediately near thebead 44, being thus l carried through the central cylinder 24. Air from-the pipe 8 passes exteriorly around' the i cylinder 24 and goes directly to the Haine l within the furnace.

Referring to F ig. 2, it will be seen that the l from the burners to that the angle at which the burner is directed,

the angle made by the inclined surface of the ore a, and the. angle madeby the surface of the wall 40, coperate with each other. Upon actual test this furnace has proven more efficient than the old style furnaces heretofore used.

By means of the space 'b above described the ore is kept or held a sufficient distance revent immediate contact, so that the slag as more room in which to get away from the burners. That part of the furnace immediately adjacent to the burners and including the lower end of the matte a, I call the smelting chamber; that is to say, the burners'direct their flames directly into the smelting chamber.

yHaving thus described my invention, I claim as new and desire to secure by Letters Patent,-

1. In a' furnace for smelting ores, a charging shaft having water-jacketed walls, and a smelting chamber provided with vertically straight water jacketed walls, a portion of the water jacket projecting inwardly at the upper part of the smelting chamber and on which the water jacket of the shaft rests, the saidlprojecting portion causing the ore to present an inclined surface, a wall of tapering thickness disposed within said smelting chamber and so arranged as to form a surface inclined relatively to said inclined surface of said ore, and a burner connected with said smelting chamber and free to heat the space betweensaid inclined surface of said ore1 and the inclined surface of said wall.

2. In a furnace for smelting ores, the combination of a charging shaft having itswalls water-jacketed, a smelting chamber larger in diameter thank the shaft 'and having a. water jacket extending vertically upward and provided at its top with a portion extending laterally inward and on which the Water jacket of the shaft rests, the walls of J said smelting chamber being rovided with openings having mwardly an downwardly i inclined sides, said smelting chamber having bination. with a shaft having a `double walled and burners extendin into said openings in water jacket, a smelting chamber larger in thev water jacket for irecting the-flames indiameter than the shaft andA having a water,

jacket extending verticallyupward and prof vided at its top with a portion extending* laterally inward so as to leave a-Space underneath said portion, the waterjacket -of-the shaft rest-in at its lower end on said inwardly projecting portion of the water` .10 jacket ofthe smeltlng4 chamber, the said projecting portion causing the orefed into the smelting chamber to present an inclined surface, the water jacket of the smelting chamber being, rovlded with openings ex- 15,` tending oblique y downward and inward,

wardly and downwardly Within the smelting chamber, theA said smelting chamber having va flat bottom surface and. an inner wall gradually decreasing in thickness upwardly and terminating atthe lower edges of the said openings.,

In testimony whereof I have signed vmy name to this specification in the presence of two subscribing witnesses.

` WILLIAM KEMP. Witnesses:

L. W. WAKFIELIJ, HARRY L. HEFFNER. 

